Article mounting structure and sprue mounting structure

Abstract

To provide an item mounting structure that can securely fasten heavy and large items to the ceiling, while also offering superior strength and durability. [Solution] The invention provides a rotating shaft, a main body 2 having a shaft member 1 that constitutes the rotating shaft, a bearing portion 21 arranged coaxially with the rotating shaft and a support portion 22 that abuts against the back surface of the ceiling C to support an article, a lifting portion 32 that can move up and down in the axial direction by the rotation of the shaft member 1 and a torque transmission means 3 that transmits torque caused by the rotation of the shaft member 1 to the main body 2 by contacting the main body 2, and a stopper portion 4 that abuts against a part of the main body 2 when the main body 2 rotates due to the transmitted torque, wherein the torque transmission means 3 is configured to have higher rigidity than the main body 2, and in the longitudinal direction of the main body 2, the position of the contact portion P1 of the torque transmission means 3 for transmitting torque to the main body 2 with respect to the rotating shaft is set to be equal to or greater than the position of the contact portion P2 between the stopper portion 4 and the main body 2 with respect to the rotating shaft.